If there is no same type of pipe in use, how to replace it?
If there is no same type of pipe in use, how to replace it?
Diodes are generally not good repair,damage can only be replaced. In selecting diodes, we should pay attention to the following principles.1 Replace the same type of pipe as far as possible.
Without the same model,according to the role of the diode circuit and the main parameters of the choice of approximate performance of the pipe replacement.
For the rectifier, Im and VRM are the two main parameters.
Different uses of the diode should not be intergenerational.
What are the performance characteristics of the diode half-bridge component?
The half-bridge component is a rectifier that connects two rectifier diodes regularly and is packaged together. Function is the same as the rectifier diode, it is more convenient to use, and the commonly used model is 2CQ series. Recommended Products:tps51100dgq
How to detect the half-bridge component?
The independent half-bridge component measurement is the same as the common diode, and the measuring method is as follows. Use the multimeter RX1 ~ RX100. The red and black stylus can be used to measure the positive and reverse resistance of two feet respectively. In the measurement, if there are two feet, both the positive and the negative, the common anode or the common anode structure, the two feet of which are the side feet, and the other is the common electrode. The common electrode is connected with the red pen, and the black stylus is used to measure both sides of the foot, if the resistance is small, it is the combination of the common cathode; if the black stylus is connected to the common electrode, the red stylus will measure both sides of the foot, if the resistance is small, then it is a common anode combination. As in the measurement, there is a pass between the pins, and the secondary resistance is very large ( approximately equivalent to the forward resistance of two tubes ), it shows that the pen is connected with the series half bridge, and the black pen is the positive pole, the red pen is negative, and the other one is the middle foot, and after the electrode is found, the normal diode method is used to detect the positive and reverse resistance of each diode. If it does not conform to the unidirectional conductivity, the half-bridge is damaged.
What are the characteristics of the whole diode bridge?
The whole bridge is a combination device that is connected by four rectifier diodes according to a certain law, and has two AC input terminals ( ~ ) and DC positive ( + ), dC negative ( a ) pole output, with a variety of shapes and a variety of voltage and current power and other specifications, Figure 5-4 shows the structure of the whole diode bridge symbol and shape. The text symbol of the full bridge rectifier is commonly UR.
This article is from allicdata
